Wednesday
May 22, 2013

# Posts by joe

Total # Posts: 1808

chemistry
A home swimming pool is disinfected by the daily addition of 0.50 gal (1 gal = 3.785 L) of a "chlorine" solution–NaOCl in NaOH(aq). To maintain the proper acidity in the pool, the NaOH(aq) in the "chlorine" solution must be neutralized. By experiment i...

Chemistry
the half-life of cobalt-60 is 5.20 years.. how many milligrams of a 2.000-mg sample remains after 6.55 years

Math
Come up with an expression for a function f such that the domain of f is all real numbers, lim (f(x) = 3) as x approaches 2 and f(2) = 3.

Free Fall
The acceleration due to gravity on planet X is one fifth that on the surface of the earth. If it takes 3.9 s for an object to fall a certain distance from rest on earth, how long would it take to fall the same distance on planet X?

Economics
There are two types of consumers of potatoes: 10 are rich and 50 are poor. Every rich consumer has a demand of 0 for a price of \$500/ton; and his/her demand decreases by 1 ton each time the price increases by \$1/ton. Every poor consumer has a demand of 0 for a price of \$280/to...

social sciences
The market supply for potatoes in New York is 2,000 tons for a price of \$200 a ton, and 5,000 tons for a price of \$500 a ton. Between these two prices market supply is a straight line. What is the equation of the supply curve?

chem
Which of the following solutions has the highest concentration of Cl- ions? 500 mL of 0.10 M NaCl 100 mL of 0.20 M MgCl2 200 mL of 0.10 M FeCl3 400 mL of 0.30 M NH4Cl 200 mL of 0.20 M KCl

chemistry
NO ITS RIGHT

chemistry
it said that was wrong

physics
46.8

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